Room Area Calculator
Room area is the floor space of a rectangular room, measured in square meters. It is calculated by multiplying length by width. Accurate room area estimates are the foundation for flooring, tiling, and paint calculations.
What Is Room Area?
Room area is the floor space of a room, measured in square meters, calculated by multiplying length and width. It is the starting point for estimating flooring, tiles, carpet, and paint. For irregular rooms, split the space into rectangles and add the areas.
Example
Formula: Length x Width = 5 m x 4 m = 20 m²
Choose units for length and width, then pick a result unit (m²).
Tip: Choose your result unit on the right before calculating.
Step-by-step calculation
- Enter room length and width with units.
- Select the result unit you want (m²).
- Calculate to see the room area and steps in the selected unit.
How this is calculated
Room area = length times width, with unit conversion to m², ft², and other common units.
Sources: IS 1200 (Method of Measurement of Building Works).
FAQ
- How do I calculate room area by hand?
- Multiply length x width. Example: 5 m x 4 m = 20 m².
- What is the formula for room area?
- Area = Length x Width. Both must be in the same unit.
- Room area vs floor area
- Room area is length x width; floor area may include closets or subtract fixtures.
- What units should I use?
- Use meters for dimensions to get m². Convert cm by dividing by 100.
- Can I use this for an L-shaped room?
- Split the room into two rectangles, calculate each area, then add them together.